STL announced a major technological breakthrough on March 25, 2026, with the launch of India’s first Hollow Core Fibre (HCF) cable, designed specifically for high-performance Data Centre networks. HCF guides light through an air-filled core, enabling signals to travel approximately ~46% faster than traditional fibres, drastically reducing latency and signal loss. STL is the first Indian company to develop and manufacture this deep-tech solution.
STL Unveils Breakthrough Optical Connectivity Solution
On March 25, 2026, Sterlite Technologies Limited (STL), a key provider for Al-ready digital infrastructure, announced a significant advancement in optical communication: the launch of India’s first Hollow Core Fibre (HCF) cable. This innovation is strategically engineered to address the critical low-latency and high-bandwidth demands of modern Data Centres, Hyperscalers, and High-Frequency transmission networks.
The Speed-of-Light Advantage
STL solidifies its position as a global deep-tech leader by being the first company in India to develop and manufacture HCF technology. Unlike traditional optical fibres that use a solid glass core, STL’s HCF guides light through an air-filled core. This fundamentally different mechanism allows signals to travel approximately ~46% faster, resulting in significantly reduced latency and minimized signal loss.
“With the launch of Hollow Core Fibre cable, we are providing the ‘speed-of-light’ infrastructure required for the Al revolution. This is a defining moment that demonstrates our capability to innovate and empower hyperscalers and data centres on a global scale”.
Dr Badri Gomatam, CTO, STL
Unique Hybrid Cable Architecture
To meet the diverse requirements of next-generation networks, STL has engineered a unique Hybrid Cable architecture. This composite cable integrates three specialized fibre types:
- Hollow Core Fibre (HCF): Targeted for ultra-low latency and high-power delivery.
- G.654.E Fibre: Optimized for ultra-low loss and large effective areas suitable for long-haul transmissions.
- G.657.A1 NOVA: Included to ensure versatility and broad network coverage capabilities.
Commitment to Future Connectivity
This breakthrough underscores STL’s dedication to the Al Data Centre market and its mission to power the next era of high-speed connectivity. The company emphasizes its foundation of innovation, supported by over 780 patents, and its focused strategy on “Glass-to-Terabit” connectivity to deliver sustainable, high-performance optical solutions globally.
Source: BSE
